diff --git a/src/line/bot-message-context.test.ts b/src/line/bot-message-context.test.ts
index 52baa0f4da0..5d61b85d386 100644
--- a/src/line/bot-message-context.test.ts
+++ b/src/line/bot-message-context.test.ts
@@ -20,6 +20,38 @@ describe("buildLineMessageContext", () => {
     config: {},
   };
 
+  const createMessageEvent = (
+    source: MessageEvent["source"],
+    overrides?: Partial<MessageEvent>,
+  ): MessageEvent =>
+    ({
+      type: "message",
+      message: { id: "1", type: "text", text: "hello" },
+      replyToken: "reply-token",
+      timestamp: Date.now(),
+      source,
+      mode: "active",
+      webhookEventId: "evt-1",
+      deliveryContext: { isRedelivery: false },
+      ...overrides,
+    }) as MessageEvent;
+
+  const createPostbackEvent = (
+    source: PostbackEvent["source"],
+    overrides?: Partial<PostbackEvent>,
+  ): PostbackEvent =>
+    ({
+      type: "postback",
+      postback: { data: "action=select" },
+      replyToken: "reply-token",
+      timestamp: Date.now(),
+      source,
+      mode: "active",
+      webhookEventId: "evt-2",
+      deliveryContext: { isRedelivery: false },
+      ...overrides,
+    }) as PostbackEvent;
+
   beforeEach(async () => {
     tmpDir = await fs.mkdtemp(path.join(os.tmpdir(), "openclaw-line-context-"));
     storePath = path.join(tmpDir, "sessions.json");
@@ -36,16 +68,7 @@ describe("buildLineMessageContext", () => {
   });
 
   it("routes group message replies to the group id", async () => {
-    const event = {
-      type: "message",
-      message: { id: "1", type: "text", text: "hello" },
-      replyToken: "reply-token",
-      timestamp: Date.now(),
-      source: { type: "group", groupId: "group-1", userId: "user-1" },
-      mode: "active",
-      webhookEventId: "evt-1",
-      deliveryContext: { isRedelivery: false },
-    } as MessageEvent;
+    const event = createMessageEvent({ type: "group", groupId: "group-1", userId: "user-1" });
 
     const context = await buildLineMessageContext({
       event,
@@ -63,16 +86,7 @@ describe("buildLineMessageContext", () => {
   });
 
   it("routes group postback replies to the group id", async () => {
-    const event = {
-      type: "postback",
-      postback: { data: "action=select" },
-      replyToken: "reply-token",
-      timestamp: Date.now(),
-      source: { type: "group", groupId: "group-2", userId: "user-2" },
-      mode: "active",
-      webhookEventId: "evt-2",
-      deliveryContext: { isRedelivery: false },
-    } as PostbackEvent;
+    const event = createPostbackEvent({ type: "group", groupId: "group-2", userId: "user-2" });
 
     const context = await buildLinePostbackContext({
       event,
@@ -83,4 +97,17 @@ describe("buildLineMessageContext", () => {
     expect(context?.ctxPayload.OriginatingTo).toBe("line:group:group-2");
     expect(context?.ctxPayload.To).toBe("line:group:group-2");
   });
+
+  it("routes room postback replies to the room id", async () => {
+    const event = createPostbackEvent({ type: "room", roomId: "room-1", userId: "user-3" });
+
+    const context = await buildLinePostbackContext({
+      event,
+      cfg,
+      account,
+    });
+
+    expect(context?.ctxPayload.OriginatingTo).toBe("line:room:room-1");
+    expect(context?.ctxPayload.To).toBe("line:room:room-1");
+  });
 });